Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method Facetious_Widget::register() should not be called statically in /var/www/oer_evidence_hub/wordpress/wp-includes/plugin.php on line 496

Performance improves with OpenTextbook adoption

“Thus students in courses that used FWK textbooks tended to have higher grades and lower failing and withdrawal rates than those in courses that did not use FWK texts. These results have statistical significance (Fall 2010: z-value =-3.636, p < 0.000, Spring 2011: z-value = -4.684, p<0.000).”